Valved fitting for refrigerating apparatus



l 5 1927. luy J. R. REPLOGLE VALVED FITTING?y FOR REFRIGERATING APPARATUS Filed Jan 3l. 1927 W 92E M "IIIIIIIIIHI l NV EN rI'OR.

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Patented -July 5', 1927.

UNITED STATES PATENT OFFICE.

JOHN' B. REPLOGLE'OF DETROIT, MICHIGAN, ASSIGNOB TO ELECTRIC REFRIGERA- TION CORPORATION, Ol' DETROIT, MICHIGAN, A CORPORATION' Ol' MICHIGAN.

FITTING FOR REFRIGERATING APPARATUS.

This invention relates to -valved fittings for refrigerating apparatusl .and particularly ertains to fittmgs provlding connections between the refrigerant lines'and the evaporator.

An object of this invention is to `provide fittings intermediate refrigerant lines and an evaporator in a refrigerating apparatus which can be readily associated with andl removed from such elements thereby facili'- tating manufacture and serviceing.

Another object of the lnventlon 1s to pro-v .,Vide a fitting, for connecting the refrigerant e lines with van evaporator in a refrigeratmg apparatus, which 1s constructed and ar- Y ranged to permit a valve structure to be enclosed-entirely therein to eliminate leakage of refrigerant therefrom.

Another object of the invention is to providea fitting, for connecting a refrigerant Aline with 4,an evaporator of a refrigerating apparatus, which is provided interiorly with a removable strainer serving to filter the refrigerant prior to its admittance into'the evaporatorand capable ofenduring extensive use without cleaning.'

These and other ob'ects will be apparent -as the description progresses, the accompanying drawing i.llustrating a preferred embodiment of the inventionL In the'drawings; v Fig. 1 is a front elevational view of an evaporator showing the valved fittings assembled therewith, a part lof one of the fittings broken away 'to show the interior structure.

structure'. 4o

Fig. 2 is side elevation thereof partly brokenaway to show some of the interior taken on the Fig. 3 i's a horizontalsection line 3-3 of Fig. 1. v

Fig. ltis a detail sectional view showing a modified form of valve structure.

' I The purpose of this invention is to pro' Appnuun mea January a1, 1927. semi no. 164,992.

17 is secured to the ringlike end plate 13 by means of the bolts 18' for closing the opening 19 in the plate 13, said opening being large enough to permit the insertion and removal of the valve mechanism (not shown) which maintains the level of the refrigerant in the evaporator constant. This plate 17 is provided With the refrigerant outlet port 20 and the refrigerant inlet port- 21.

'Ihe refrigerant feed line must be connected to the inlet port 2l and the return suction line connected to the outlet port 20. Itis 4-very important that these connectionsshould not leak, and to prevent any chance of vleakage I provide fittings, which are secured to the plate"17 'in any suitable manner. These fittings are preferably secured-.to theplate 17 bythe bolts 22,- or they may be efxternally threaded, as at 23, (Figs. 3l and 4f and screwed directly into the plate.

These fittings are substantially identical for each connection, anda description of one of the fittings will ,be sufiicient for a clear understanding of the invention. Each fitting com rises a valve casin 24 provided with a va ve chamber 25 an with a passageway 26, the passageway of one ofthe fittings servin vas an inlet and the assageway of the ot er servin as an out et, ysaid -passageway communicating with the valve chamber 25. In line with the passageway, the 'casinglis provided with a bore which vcommunicates with the valve chamber, open.- ing. into said valve chamber directly opposite from the mouth ofthe passageway in lmetherewith. Adjacent the valve chamber the bore isvinternall threaded, and beyond, the

bore is enlarge as at 27, and internally threaded, as at 28. This bore is open' to the outsideA of the casing, Aand is closed by a screw threaded plugv29. vThe valve'structure comprises the valve 30 which is beveled ,and shaped to seat on the mouth of said passageway for closing the same, and is eX-'- ternally threadedat an intermediate point, as at 31, this threaded ortion of the valve struct-ure being arrang to engage the first mentioned threaded portion of the bore. The opposite end of the valve structure from. the valve 30 is provided withan angular wrench grip 32, this portion of the valve structure being projected within the enlarged'bore 27 o the valve' casingV so that when thehplug 29 is removed a wrench or other suitable tool may be inserted and applied to the Wrench grip for manually adjusting the valve With respect to its seat. The Y aching 33 and packing nut Se are assem led Within the enlarged bore for preventing leakage of the refrigerant longitudinally along 'the valve stem. The assembly f of this valve structure Within the valve casing may be readily made,'as the valve may be inserted and removed through this bore, 'andvvhen properly adjusted the plug 29 is screwed in thus sealing the valve structure vvithin the casing and entirely enclosing the same. The mouth of the outlet passageway is shown closed in Fig. l, and 'the mouth of the inlet passageway is shown closed in Fig. 3. 1

Fig. d there is shown a modified form oi valve assembly in which the casing 3:3 'is providedvvitl'i the abrupt shoulder 36.. The valve stem is oi slightly diiierent structure., and comprises a portion 37 reduced in diameter and extending within the enlarged bore.

and prevent any far-,ther movement of the valve.

In Fig. 3 the fitting is shownas-adapted to connect the refrigerant i'eed line (notshown) with the evaporator, by means of the union 45. Secured to the inner end ofthis union is a cup-shapedscreen 46 Vwhich is enclosed Within the passageway 26 which in Y this case serves as an inlet passageway. The

refrigerant must ltherefore pass throu h this screen before entering the valve cham r 25, and consequently the refrigerant will be iiitered, thus removing any oreignparticles from the refrigerant before the same enters the' evaporator. This union Y45 is externally threaded, as at 47, and is screwed into. the end of the fitting. I' Such a connection permits the ready removal of the screen or the purpose-'of replacing or cleaning the same. The relatively large area osreen effective for iilteringv the refrigerant requires less nent removal and cleaning of the screen. Wi the valve structure as above described, the same may be manually turned down to Y close the o ening between the inlet'p asage way and e valve chamber before disconnecting therefrigerant feed moving the screen. Similarly, the connection of the fxttin to the' return suction line maybe remove aiter turning the valve down on its seat. Fig. 1 shows the oonstruction of the valve which is used as a connecline when. re-

incassa tion between the evaporator and the return I return suction line, is not provided with a screen. v

This' improved fitting, asl described above, may be readily securedto the evaporator, the refrigerant lines being 'connected directly to Jthe ttings. l/'henever any of the refrigerant lines ,are disconnected the valve must be closed so as to trap the refrigerant Within the evaporator to prevent any escape oi the reirigerant. The construction and assembly oi the valve Within the fitting is such that ready access may be had thereto :for the purpose ci making adjiustments or i-or removing the valve-ii necessary.

lil/*hat l claim is:

l. A fitting or connecting an evaporator into the refrigerant circuit oi a reirigerating system, comprising a 'valve casing -`provided with a valve chamber and with inlet and outletl passageways communicating with said valve chamber, and a vvalve structure entirely enclosed Within said valve casing for openingor closing one o said passagevvays.A

2. A fitting for connecting an evaporator into the refrigerant circuit of a reirigerating Y system, comprising a valve Acasing provided with a valve chamber and with inlet and' outlet passagevvays communicating with said valve chamber, and a manually adjustable valve structure entirely enclosed Within said Vvalve-casing for opening or closing oneof said passageways.

3. A fitting forV connectingan evaporator into the refrigerant circuit of a refrigeratin system, comprising a valve casing provi ed with avalve chamber and with inlet and' outlet` passageways communicating vwith said valve chamber, an adinstable valve structure in said chamber entirely enclosedby said casing for opening 'l Yand closing one of said passageWays,-said casing being provided withan opening in the wall thereof through which said valve may be inserted and removed, and a closure member for said opening and which is re movably-seoured to said casing.

4. A fitting for connecting an evaporator into the refrigerant circuit of a refrigerating System; com provided with a v ve chamber and with inlet and outlet. passageways communicat- 'ing with said' valve chamber, a valve 'structure supported said chamber Y and entirely Aenclosed by'said valve casing, said valve strlcture having a screw threadedengagement with said valve casing to permit the manual adjustment of said valve,

saidcasing provided with an openilai-g in the wallthereo through which said v veJma-y be inserted and removed and through which access may be hadito said valve for adjustlll) a valve casing ing the same,`and a closuremember for said opening removably secured to said casing.

5. A fitting for connecting the refrigerant lines to an evaporator of a refrigerating apparatus, comprising .a valve casing provided with a valve chamber and with inlet and outlet passageways communicating with said said valvechamber, a valve supported within said Tchamber and enclosed by said valve' casing, said Valve having a screw threaded engagement with said valve casing to permit the manual adjustment of said valve, and means for limiting the opening movement of said valve.

6. A fitting for connecting the refrigerant lines to an evaporator of a refrigerating apparatus, comprising a valve casing provided with a valve chamber and with inlet and outlet passageways communicating with said valve chamber, said casing provided with a bore communicating with said valve chamber, the inner portion of said bore being internally threaded and the outer portion being enlarged and internally threaded, a plug screwed into the enlarged threaded portion to close.the outer endof the bore, a valve structure including a valve stem being eX- ternally threaded to engage the inner threaded portion of the bore, the outer end portion of said stem being Areduced in diameter and rojected within the enlarged portion of the ore, a washer. fitted within the enlarged bore and abutting the shoulder formed at the base of the enlarged bore, a packing nut and packing member bearing against said washer, the end of said valve stem extending beyond said acking nut being adapted to be engaged or adjustment, the shoulder formed by the reduced outer portion of the stem being arranged to engage said washer to limit the outward movement of saidv Valve,said plug bein'g removable to permit access to the end of said valve stem for many ual adjustment.

7. A fitting for connecting the refrigerant lines to an evaporator of a refrigerating apparatus, comprising a valve casing provided with a valve chamber and with inlet and outlet passageways communicating with said valve chamber, a valve within'said casing for opening or closing one of said passageways, and a' cup-shaped ilteringelementv having a relative large area of filtering surface and removably secured within said casing for filtering the refrigerant prior to its entrance into the evaporator. 4

8. A fitting for connecting the refrigerant lines to'an evaporator of a refrigerating apparatus, comprising a valve casing provided with a valve chamber and with inlet and outlet passageways communicating with said valve chamber, a valve within said casing for opening or closing one of said passageways, and a cup-shaped filtering screen having a relatively large area of filtering surface and removablysupported within said inlet Apassageway.

. 9. fitting for connecting the refrigerant lines to an evaporator of a refrigerating apparatus, comprising a valve casing provided With a valve chamber and with inlet and outlet passageways, and a valve structure enclosed within said valve casing for opening or closing one of said passageways, said casing being constructed to permit the securing of connections thereto communicating with said inlet and outlet passageways, one ofl sageways, a union secured'to said casing at f the mouth of one of said passageways to vwhich one of the refrigerant lines may be attached, and a filtering screen associated with the inner end of said union, 'said screen and unionv being removable from the casing.

In testimony whereof, I hereunto afiix my signature.

JOHN R; REPLOGLE. 

